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GHSA-qxp5-gwg8-xv66

HTTP Proxy bypass using IPv6 Zone IDs in golang.org/x/net

Source: GitHub Advisory Database (reviewed) Moderate CVE-2025-22870

Packages

EcosystemPackageAffectedFixed in
Go golang.org/x/net < 0.36.0 0.36.0

Details

As written in the advisory (Markdown source, shown as plain text).

Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NO_PROXY environment variable is set to "*.example.com", a request to "[::1%25.example.com]:80` will incorrectly match and not be proxied.

References

External links from the advisory. They lead to third-party sites.